[tz] [PATCH] Replace Africa zones with links when that doesn't lose useful info.
Paul Eggert
eggert at cs.ucla.edu
Wed Jul 9 19:44:55 UTC 2014
* africa (Africa/Luanda, Africa/Porto-Novo, Africa/Gaborone)
(Africa/Ouagadougou, Africa/Bujumbura, Africa/Douala, Africa/Bangui)
(Indian/Comoro, Africa/Kinshasa, Africa/Lubumbashi, Africa/Brazzaville)
(Africa/Djibouti, Africa/Malabo, Africa/Asmara, Africa/Addis_Ababa)
(Africa/Libreville, Africa/Banjul, Africa/Accra, Africa/Conakry)
(Africa/Maseru, Indian/Antananarivo, Africa/Blantyre, Africa/Bamako)
(Africa/Nouakchott, Indian/Mayotte, Africa/Maputo, Africa/Niamey)
(Africa/Kigali, Atlantic/St_Helena, Africa/Sao_Tome, Africa/Dakar)
(Africa/Freetown, Africa/Mogadishu, Africa/Mbabane, Africa/Dar_es_Salaam)
(Africa/Lome, Africa/Kampala, Africa/Lusaka, Africa/Harare):
* antarctica (Antarctica/Syowa):
Remove zone, replacing each with a link to a region that has had
the same UTC offset since 1970.
* NEWS: Document this.
---
NEWS | 20 +++--
africa | 266 ++++++++++++++++++++-----------------------------------------
antarctica | 5 +-
3 files changed, 104 insertions(+), 187 deletions(-)
diff --git a/NEWS b/NEWS
index 222f91e..429b89e 100644
--- a/NEWS
+++ b/NEWS
@@ -61,11 +61,21 @@ Unreleased, experimental changes
Some zones have been turned into links, when they differed from existing
zones only for older UTC offsets where the data were likely invented.
These changes affect UTC offsets in pre-1970 time stamps only. This is
- similar to the change in release 2013e, except this time for the Pacific.
- The affected zones are: Antarctica/DumontDUrville, Pacific/Chuuk,
- Pacific/Funafuti, Pacific/Majuro, Pacific/Midway, Pacific/Palau,
- Pacific/Pohnpei, Pacific/Saipan, Pacific/Tahiti, Pacific/Wake, and
- Pacific/Wallis.
+ similar to the change in release 2013e, except this time for Africa and
+ the Pacific. The affected zones are: Africa/Accra, Africa/Addis_Ababa,
+ Africa/Asmara, Africa/Bamako, Africa/Bangui, Africa/Banjul,
+ Africa/Blantyre, Africa/Brazzaville, Africa/Bujumbura, Africa/Conakry,
+ Africa/Dakar, Africa/Dar_es_Salaam, Africa/Djibouti, Africa/Douala,
+ Africa/Freetown, Africa/Gaborone, Africa/Harare, Africa/Kampala,
+ Africa/Kigali, Africa/Kinshasa, Africa/Libreville, Africa/Lome,
+ Africa/Luanda, Africa/Lubumbashi, Africa/Lusaka, Africa/Malabo,
+ Africa/Maputo, Africa/Maseru, Africa/Mbabane, Africa/Mogadishu,
+ Africa/Niamey, Africa/Nouakchott, Africa/Ouagadougou, Africa/Porto-Novo,
+ Africa/Sao_Tome, Antarctica/DumontDUrville, Antarctica/Syowa,
+ Atlantic/St_Helena, Indian/Antananarivo, Indian/Comoro, Indian/Mayotte,
+ Pacific/Chuuk, Pacific/Funafuti, Pacific/Majuro, Pacific/Midway,
+ Pacific/Palau, Pacific/Pohnpei, Pacific/Saipan, Pacific/Tahiti,
+ Pacific/Wake, and Pacific/Wallis.
Asia/Shanghai's pre-standard-time UT offset has been changed from
8:05:57 to 8:05:43, the location of Xujiahui Observatory. Its
diff --git a/africa b/africa
index 3d84d9b..678cde2 100644
--- a/africa
+++ b/africa
@@ -64,7 +64,6 @@
# 3:00 CAST Central Africa Summer Time (no longer used)
# 3:00 SAST South Africa Summer Time (no longer used)
# 3:00 EAT East Africa Time
-# 4:00 EAST East Africa Summer Time (no longer used)
# Algeria
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
@@ -105,45 +104,21 @@ Zone Africa/Algiers 0:12:12 - LMT 1891 Mar 15 0:01
1:00 - CET
# Angola
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Luanda 0:52:56 - LMT 1892
- 0:52:04 - AOT 1911 May 26 # Angola Time
- 1:00 - WAT
-
# Benin
-# Whitman says they switched to 1:00 in 1946, not 1934;
-# go with Shanks & Pottenger.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Porto-Novo 0:10:28 - LMT 1912
- 0:00 - GMT 1934 Feb 26
- 1:00 - WAT
+# See Africa/Lagos.
# Botswana
-# From Paul Eggert (2013-02-21):
-# Milne says they were regulated by the Cape Town Signal in 1899;
-# assume they switched to 2:00 when Cape Town did.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Gaborone 1:43:40 - LMT 1885
- 1:30 - SAST 1903 Mar
- 2:00 - CAT 1943 Sep 19 2:00
- 2:00 1:00 CAST 1944 Mar 19 2:00
- 2:00 - CAT
+# Milne says they were regulated by the Cape Town Signal in 1899.
+# See Africa/Johannesburg.
# Burkina Faso
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Ouagadougou -0:06:04 - LMT 1912
- 0:00 - GMT
+# See Africa/Abidjan.
# Burundi
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Bujumbura 1:57:28 - LMT 1890
- 2:00 - CAT
+# See Africa/Johannesburg.
# Cameroon
-# Whitman says they switched to 1:00 in 1920; go with Shanks & Pottenger.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Douala 0:38:48 - LMT 1912
- 1:00 - WAT
+# See Africa/Lagos.
# Cape Verde
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
@@ -154,9 +129,7 @@ Zone Atlantic/Cape_Verde -1:34:04 - LMT 1907 # Praia
-1:00 - CVT
# Central African Republic
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Bangui 1:14:20 - LMT 1912
- 1:00 - WAT
+# See Africa/Lagos.
# Chad
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
@@ -166,31 +139,33 @@ Zone Africa/Ndjamena 1:00:12 - LMT 1912 # N'Djamena
1:00 - WAT
# Comoros
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Indian/Comoro 2:53:04 - LMT 1911 Jul # Moroni, Gran Comoro
- 3:00 - EAT
+# See Africa/Nairobi.
# Democratic Republic of Congo
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Kinshasa 1:01:12 - LMT 1897 Nov 9
- 1:00 - WAT
-Zone Africa/Lubumbashi 1:49:52 - LMT 1897 Nov 9
- 2:00 - CAT
+# See Africa/Lagos for the western part of the country.
+# See Africa/Johannesburg for the eastern part of the country.
# Republic of the Congo
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Brazzaville 1:01:08 - LMT 1912
- 1:00 - WAT
+# See Africa/Lagos.
# Côte D'Ivoire / Ivory Coast
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Abidjan -0:16:08 - LMT 1912
0:00 - GMT
+Link Africa/Abidjan Africa/Accra # Ghana
+Link Africa/Abidjan Africa/Bamako # Mali
+Link Africa/Abidjan Africa/Banjul # Gambia
+Link Africa/Abidjan Africa/Conakry # Guinea
+Link Africa/Abidjan Africa/Dakar # Senegal
+Link Africa/Abidjan Africa/Freetown # Sierra Leone
+Link Africa/Abidjan Africa/Lome # Togo
+Link Africa/Abidjan Africa/Nouakchott # Mauritania
+Link Africa/Abidjan Africa/Ouagadougou # Burkina Faso
+Link Africa/Abidjan Africa/Sao_Tome # São Tomé and Príncipe
+Link Africa/Abidjan Atlantic/St_Helena # St Helena
# Djibouti
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Djibouti 2:52:36 - LMT 1911 Jul
- 3:00 - EAT
+# See Africa/Nairobi.
###############################################################################
@@ -400,56 +375,32 @@ Zone Africa/Cairo 2:05:09 - LMT 1900 Oct
2:00 Egypt EE%sT
# Equatorial Guinea
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Malabo 0:35:08 - LMT 1912
- 0:00 - GMT 1963 Dec 15
- 1:00 - WAT
+# See Africa/Lagos.
# Eritrea
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Asmara 2:35:32 - LMT 1870
- 2:35:32 - AMT 1890 # Asmara Mean Time
- 2:35:20 - ADMT 1936 May 5 # Adis Dera MT
- 3:00 - EAT
+# See Africa/Nairobi.
# Ethiopia
-# From Paul Eggert (2006-03-22):
-# Shanks & Pottenger write that Ethiopia had six narrowly-spaced time zones
-# between 1870 and 1890, and that they merged to 38E50 (2:35:20) in 1890.
-# We'll guess that 38E50 is for Adis Dera.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Addis_Ababa 2:34:48 - LMT 1870
- 2:35:20 - ADMT 1936 May 5 # Adis Dera MT
- 3:00 - EAT
+# From Paul Eggert (2014-07-09):
+# Like the Swahili of Kenya and Tanzania, many Ethiopians keep a
+# 12-hour clock starting at our 06:00, so their "8 o'clock" is our
+# 02:00 or 14:00. Keep this in mind when you ask the time in Amharic.
+#
+# Shanks & Pottenger write that Ethiopia had six narrowly-spaced time
+# zones between 1870 and 1890, that they merged to 38E50 (2:35:20) in
+# 1890, and that they switched to 3:00 on 1936-05-05. Perhaps 38E50
+# was for Adis Dera. Ignore this for now as it predates our 1970
+# cutoff, and it's quite likely wrong anyway.
+#
+# See Africa/Nairobi.
# Gabon
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Libreville 0:37:48 - LMT 1912
- 1:00 - WAT
+# See Africa/Lagos.
# Gambia
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Banjul -1:06:36 - LMT 1912
- -1:06:36 - BMT 1935 # Banjul Mean Time
- -1:00 - WAT 1964
- 0:00 - GMT
-
# Ghana
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-# Whitman says DST was observed from 1931 to "the present";
-# go with Shanks & Pottenger.
-Rule Ghana 1936 1942 - Sep 1 0:00 0:20 GHST
-Rule Ghana 1936 1942 - Dec 31 0:00 0 GMT
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Accra -0:00:52 - LMT 1918
- 0:00 Ghana %s
-
# Guinea
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Conakry -0:54:52 - LMT 1912
- 0:00 - GMT 1934 Feb 26
- -1:00 - WAT 1960
- 0:00 - GMT
+# See Africa/Abidjan.
# Guinea-Bissau
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
@@ -464,13 +415,19 @@ Zone Africa/Nairobi 2:27:16 - LMT 1928 Jul
2:30 - BEAT 1940
2:45 - BEAUT 1960
3:00 - EAT
+Link Africa/Nairobi Africa/Addis_Ababa # Ethiopia
+Link Africa/Nairobi Africa/Asmara # Eritrea
+Link Africa/Nairobi Africa/Dar_es_Salaam # Tanzania
+Link Africa/Nairobi Africa/Djibouti
+Link Africa/Nairobi Africa/Kampala # Uganda
+Link Africa/Nairobi Africa/Mogadishu # Somalia
+Link Africa/Nairobi Antarctica/Syowa
+Link Africa/Nairobi Indian/Antananarivo # Madagascar
+Link Africa/Nairobi Indian/Comoro
+Link Africa/Nairobi Indian/Mayotte
# Lesotho
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Maseru 1:50:00 - LMT 1903 Mar
- 2:00 - SAST 1943 Sep 19 2:00
- 2:00 1:00 SAST 1944 Mar 19 2:00
- 2:00 - SAST
+# See Africa/Johannesburg.
# Liberia
# From Paul Eggert (2006-03-22):
@@ -545,30 +502,14 @@ Zone Africa/Tripoli 0:52:44 - LMT 1920
2:00 - EET
# Madagascar
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Indian/Antananarivo 3:10:04 - LMT 1911 Jul
- 3:00 - EAT 1954 Feb 27 23:00s
- 3:00 1:00 EAST 1954 May 29 23:00s
- 3:00 - EAT
+# See Africa/Nairobi.
# Malawi
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Blantyre 2:20:00 - LMT 1903 Mar
- 2:00 - CAT
+# See Africa/Johannesburg.
# Mali
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Bamako -0:32:00 - LMT 1912
- 0:00 - GMT 1934 Feb 26
- -1:00 - WAT 1960 Jun 20
- 0:00 - GMT
-
# Mauritania
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Nouakchott -1:03:48 - LMT 1912
- 0:00 - GMT 1934 Feb 26
- -1:00 - WAT 1960 Nov 28
- 0:00 - GMT
+# See Africa/Abidjan.
# Mauritius
@@ -665,8 +606,7 @@ Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis
# Mayotte
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Indian/Mayotte 3:00:56 - LMT 1911 Jul # Mamoutzou
- 3:00 - EAT
+# See Africa/Nairobi.
# Morocco
# See the 'europe' file for Spanish Morocco (Africa/Ceuta).
@@ -964,9 +904,7 @@ Zone Africa/El_Aaiun -0:52:48 - LMT 1934 Jan # El Aaiún
0:00 Morocco WE%sT
# Mozambique
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Maputo 2:10:20 - LMT 1903 Mar
- 2:00 - CAT
+# See Africa/Johannesburg.
# Namibia
# The 1994-04-03 transition is from Shanks & Pottenger.
@@ -998,16 +936,21 @@ Zone Africa/Windhoek 1:08:24 - LMT 1892 Feb 8
1:00 Namibia WA%sT
# Niger
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Niamey 0:08:28 - LMT 1912
- -1:00 - WAT 1934 Feb 26
- 0:00 - GMT 1960
- 1:00 - WAT
+# See Africa/Lagos.
# Nigeria
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Lagos 0:13:36 - LMT 1919 Sep
1:00 - WAT
+Link Africa/Lagos Africa/Bangui # Central African Republic
+Link Africa/Lagos Africa/Brazzaville # Rep. of the Congo
+Link Africa/Lagos Africa/Douala # Cameroon
+Link Africa/Lagos Africa/Kinshasa # W Dem. Rep. of the Congo
+Link Africa/Lagos Africa/Libreville # Gabon
+Link Africa/Lagos Africa/Luanda # Angola
+Link Africa/Lagos Africa/Malabo # Equatorial Guinea
+Link Africa/Lagos Africa/Niamey # Niger
+Link Africa/Lagos Africa/Porto-Novo # Benin
# Réunion
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
@@ -1028,16 +971,11 @@ Link Indian/Reunion Indian/Alfred_Faure
# Tromelin - inhabited until at least 1958
# Rwanda
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Kigali 2:00:16 - LMT 1935 Jun
- 2:00 - CAT
+# See Africa/Johannesburg.
# St Helena
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Atlantic/St_Helena -0:22:48 - LMT 1890 # Jamestown
- -0:22:48 - JMT 1951 # Jamestown Mean Time
- 0:00 - GMT
-# The other parts of the St Helena territory are similar:
+# See Africa/Abidjan.
+# The parts of the St Helena territory are similar:
# Tristan da Cunha: on GMT, say Whitman and the CIA
# Ascension: on GMT, say the USNO (1995-12-21) and the CIA
# Gough (scientific station since 1955; sealers wintered previously):
@@ -1045,16 +983,8 @@ Zone Atlantic/St_Helena -0:22:48 - LMT 1890 # Jamestown
# Inaccessible, Nightingale: uninhabited
# São Tomé and Príncipe
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Sao_Tome 0:26:56 - LMT 1884
- -0:36:32 - LMT 1912 # Lisbon Mean Time
- 0:00 - GMT
-
# Senegal
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Dakar -1:09:44 - LMT 1912
- -1:00 - WAT 1941 Jun
- 0:00 - GMT
+# See Africa/Abidjan.
# Seychelles
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
@@ -1068,24 +998,10 @@ Zone Indian/Mahe 3:41:48 - LMT 1906 Jun # Victoria
# Possibly the islands were uninhabited.
# Sierra Leone
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-# Whitman gives Mar 31 - Aug 31 for 1931 on; go with Shanks & Pottenger.
-Rule SL 1935 1942 - Jun 1 0:00 0:40 SLST
-Rule SL 1935 1942 - Oct 1 0:00 0 WAT
-Rule SL 1957 1962 - Jun 1 0:00 1:00 SLST
-Rule SL 1957 1962 - Sep 1 0:00 0 GMT
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Freetown -0:53:00 - LMT 1882
- -0:53:00 - FMT 1913 Jun # Freetown Mean Time
- -1:00 SL %s 1957
- 0:00 SL %s
+# See Africa/Abidjan.
# Somalia
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Mogadishu 3:01:28 - LMT 1893 Nov
- 3:00 - EAT 1931
- 2:30 - BEAT 1957
- 3:00 - EAT
+# See Africa/Nairobi.
# South Africa
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
@@ -1095,6 +1011,17 @@ Rule SA 1943 1944 - Mar Sun>=15 2:00 0 -
Zone Africa/Johannesburg 1:52:00 - LMT 1892 Feb 8
1:30 - SAST 1903 Mar
2:00 SA SAST
+Link Africa/Johannesburg Africa/Blantyre # Malawi
+Link Africa/Johannesburg Africa/Bujumbura # Burundi
+Link Africa/Johannesburg Africa/Gaborone # Botswana
+Link Africa/Johannesburg Africa/Harare # Zimbabwe
+Link Africa/Johannesburg Africa/Kigali # Rwanda
+Link Africa/Johannesburg Africa/Lubumbashi # E Dem. Rep. of Congo
+Link Africa/Johannesburg Africa/Lusaka # Zambia
+Link Africa/Johannesburg Africa/Maputo # Mozambique
+Link Africa/Johannesburg Africa/Maseru # Lesotho
+Link Africa/Johannesburg Africa/Mbabane # Swaziland
+#
# Marion and Prince Edward Is
# scientific station since 1947
# no information
@@ -1122,21 +1049,13 @@ Zone Africa/Khartoum 2:10:08 - LMT 1931
Link Africa/Khartoum Africa/Juba
# Swaziland
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Mbabane 2:04:24 - LMT 1903 Mar
- 2:00 - SAST
+# See Africa/Johannesburg.
# Tanzania
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Dar_es_Salaam 2:37:08 - LMT 1931
- 3:00 - EAT 1948
- 2:45 - BEAUT 1961
- 3:00 - EAT
+# See Africa/Nairobi.
# Togo
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Lome 0:04:52 - LMT 1893
- 0:00 - GMT
+# See Africa/Abidjan.
# Tunisia
@@ -1239,19 +1158,8 @@ Zone Africa/Tunis 0:40:44 - LMT 1881 May 12
1:00 Tunisia CE%sT
# Uganda
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Kampala 2:09:40 - LMT 1928 Jul
- 3:00 - EAT 1930
- 2:30 - BEAT 1948
- 2:45 - BEAUT 1957
- 3:00 - EAT
+# See Africa/Nairobi.
# Zambia
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Lusaka 1:53:08 - LMT 1903 Mar
- 2:00 - CAT
-
# Zimbabwe
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Harare 2:04:12 - LMT 1903 Mar
- 2:00 - CAT
+# See Africa/Johannesburg.
diff --git a/antarctica b/antarctica
index 16aedaa..38720a8 100644
--- a/antarctica
+++ b/antarctica
@@ -207,12 +207,11 @@ Zone Indian/Kerguelen 0 - zzz 1950 # Port-aux-Français
# Syowa station, which is the first antarctic station of Japan,
# was established on 1957-01-29. Since Syowa station is still the main
# station of Japan, it's appropriate for the principal location.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Antarctica/Syowa 0 - zzz 1957 Jan 29
- 3:00 - SYOT # Syowa Time
# See:
# NIPR Antarctic Research Activities (1999-08-17)
# <http://www.nipr.ac.jp/english/ara01.html>
+#
+# See Africa/Nairobi.
# S Korea - year-round base
# Jang Bogo, Terra Nova Bay, -743700+1641205 since 2014
--
1.9.1
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